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test_beacon_root_contract_timestamps()

Documentation for tests/cancun/eip4788_beacon_root/test_beacon_root_contract.py::test_beacon_root_contract_timestamps@892e6d1e.

Generate fixtures for these test cases for Amsterdam with:

fill -v tests/cancun/eip4788_beacon_root/test_beacon_root_contract.py::test_beacon_root_contract_timestamps --fork Amsterdam

Tests the beacon root contract call across for various valid and invalid timestamps.

The expected result is that the contract call will return the correct parent_beacon_block_root for a valid input timestamp and return the zero'd 32 bytes value for an invalid input timestamp.

Source code in tests/cancun/eip4788_beacon_root/test_beacon_root_contract.py 
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@pytest.mark.parametrize(
    "timestamp, valid_input",
    [
        (0x0C, True),  # twelve
        (2**32, True),  # arbitrary
        (2**64 - 2, True),  # near-max
        (2**64 - 1, True),  # max
        # TODO: Update t8n to un marshal > 64-bit int
        # Exception: failed to evaluate: ERROR(10): failed un marshaling stdin
        # (2**64, False),  # overflow
        # Exception: failed to evaluate: ERROR(10): failed un marshaling stdin
        # (2**64 + 1, False),  # overflow+1
    ],
)
@pytest.mark.parametrize("auto_access_list", [False, True])
@pytest.mark.parametrize(
    "system_address_balance",
    [
        pytest.param(0, id="empty_system_address"),
        pytest.param(1, id="one_wei_system_address"),
        pytest.param(int(1e18), id="one_eth_system_address"),
    ],
)
@pytest.mark.valid_from("Cancun")
def test_beacon_root_contract_timestamps(
    blockchain_test: BlockchainTestFiller,
    beacon_root: bytes,
    timestamp: int,
    pre: Alloc,
    tx: Transaction,
    post: Dict,
) -> None:
    """
    Tests the beacon root contract call across for various valid and invalid
    timestamps.

    The expected result is that the contract call will return the correct
    `parent_beacon_block_root` for a valid input timestamp and return the
    zero'd 32 bytes value for an invalid input timestamp.
    """
    blockchain_test(
        pre=pre,
        blocks=[
            Block(
                txs=[tx],
                parent_beacon_block_root=beacon_root,
                timestamp=timestamp,
            )
        ],
        post=post,
    )

Parametrized Test Cases

This test generates 24 parametrized test cases across 4 forks.